These entries are queried from radb.net using whois, you can try my project getting these.
:AS53620 route: 141.193.89.0/24 origin: AS53620 descr: Pinterest SFO2 admin-c: NETWO7665-ARIN tech-c: MKJ7-ARIN tech-c: NOC13141-ARIN mnt-by: MNT-PINTE-1 created: 2021-07-08T22:35:58Z last-modified: 2023-11-10T03:55:19Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 141.193.91.0/24 origin: AS53620 descr: Pinterest 808 admin-c: Intelletrace Support tech-c: Arin Support mnt-by: MAINT-AS32504 changed: dzerbe [at] intelletrace.com 20200414 #17:48:21Z source: RADB last-modified: 2023-11-13T16:00:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.34.198.0/24 descr: Pinterest origin: AS53620 admin-c: Intelletrace Support tech-c: Arin Support geoidx: US-CA geoidx: US geoidx: San Francisco remarks: 572 7th St., San Francisco, CA mnt-by: MAINT-AS32504 changed: jj [at] intelletrace.com 20160614 #16:20:43Z source: RADB last-modified: 2023-11-13T15:49:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.94.66.0/24 descr: Pinterest origin: AS53620 admin-c: Intelletrace Support tech-c: ARIN Support notify: support [at] intelletrace.com mnt-by: MAINT-AS32504 changed: jj [at] intelletrace.com 20160512 #15:29:57Z source: RADB last-modified: 2023-11-13T15:49:08Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.187.223.0/24 descr: Pinterest 808 origin: AS53620 admin-c: Intelletrace Support tech-c: Arin Support mnt-by: MAINT-AS32504 changed: jj [at] intelletrace.com 20140910 #02:52:37Z source: RADB last-modified: 2023-11-13T15:46:39Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:128:1000::/48 descr: Pinterest, Inc. origin: AS53620 geoidx: US-CA geoidx: US geoidx: SF-CA remarks: Just another day in the life mnt-by: MAINT-AS32504 changed: jj [at] intelletrace.com 20170629 #21:16:55Z source: RADB last-modified: 2023-11-13T15:51:15Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source